High Quality Content by WIKIPEDIA articles! There were two German attacks on Nauru in December 1940. These attacks were conducted by auxiliary cruisers between 6 and 8 December and on the 27th of the month. The raiders sank five Allied merchant ships and inflicted serious damage on Nauru`s economically important phosphate-loading facilities. Despite the significance of the island to the Australian and New Zealand economies, Nauru was not defended and the German force did not suffer any losses.